Showing papers in "Canadian Geotechnical Journal in 1993"
TL;DR: In this paper, laboratory experiments on undisturbed specimens of a large number of soft clay deposits, as well as previous measurements on clays and granular soils, were used to examine and explain the magnitude of the magnitude change in soft clay deformation.
Abstract: Laboratory experiments on undisturbed specimens of a large number of soft clay deposits, as well as previous measurements on clays and granular soils, were used to examine and explain the magnitude...
653 citations
TL;DR: Fragmental rockfall is characterized by the independent movement of individual rock fragments after detachment from a rock face as discussed by the authors, and the continued operation of the process leads to the accumulation of...
Abstract: Fragmental rockfall is characterized by the independent movement of individual rock fragments after detachment from a rock face. The continued operation of the process leads to the accumulation of ...
413 citations
TL;DR: In this article, the characteristics of ground surface settlement during excavation were studied in ten excavation cases in Taipei with good-quality construction and field observation data, and the objective of the study was to study the characteristics and characteristics of the ground surface settling during excavation.
Abstract: The objective of this paper is to study the characteristics of ground surface settlement during excavation. Ten excavation cases in Taipei with good-quality construction and field observation data ...
330 citations
TL;DR: In this paper, the vertical bearing capacity of circular and strip footings on soil which satisfies a linear Mohr-Coulomb strength criterion was established. But the method of characteristics was used to establish consistent factors for the verticalbearing capacity of vertical footings.
Abstract: The method of characteristics is used to establish consistent factors for the vertical bearing capacity of circular and strip footings on soil which satisfies a linear Mohr–Coulomb strength criteri...
270 citations
TL;DR: In this article, a generalized model for three-dimensional analysis using the method of columns is presented, which is an extension of the two-dimensional general limit equilibrium formulation, and the model is shown to work well in 3D space.
Abstract: A generalized model for three-dimensional analysis, using the method of columns, is presented. The model is an extension of the two-dimensional general limit equilibrium formulation. Intercolumn fo...
254 citations
TL;DR: In this paper, the ultimate bearing capacity of strip and square foundations supported by sand reinforced with geogrid layers has been evaluated using a model test results based on the test results.
Abstract: Laboratory model test results for the ultimate bearing capacity of strip and square foundations supported by sand reinforced with geogrid layers have been presented. Based on the model test results...
221 citations
TL;DR: In this article, the main characteristics of the drying and wetting paths and the influence of initial state and other factors were investigated on 11 different clayey materials to determine their main characteristics.
Abstract: Experimental research was carried out on 11 different clayey materials to determine the main characteristics of the drying and wetting paths and the influence of initial state and other factors. No...
213 citations
TL;DR: The hyperbolic model is a reasonable conceptual model for representing the stress-strain behavior of sand as mentioned in this paper, even at stresses well below the peak strength of the sand, and it has been shown that it is a suitable model for modelling the sand stress.
Abstract: The stress–strain behaviour of sands is highly nonlinear, even at stresses well below the peak strength of the sand. The hyperbolic model is a reasonable conceptual model for representing the stres...
188 citations
TL;DR: According to stability postulates by other authors, soils that exhibit nonassociated flow may become unstable when exposed to certain stress paths inside the failure surface as mentioned in this paper, and several series of conv...
Abstract: According to stability postulates by other authors, soils that exhibit nonassociated flow may become unstable when exposed to certain stress paths inside the failure surface. Several series of conv...
179 citations
TL;DR: Several studies have shown that freeze-thaw causes changes in the hydraulic conductivity of compacted clays as discussed by the authors, and that cracks formed by ice lensing and shrinkage cause hydraulic conductivities to increase.
Abstract: Several studies have shown that freeze–thaw causes changes in the hydraulic conductivity of compacted clays. Cracks formed by ice lensing and shrinkage cause the hydraulic conductivity to increase....
161 citations
TL;DR: In this paper, the authors show that loose cohesionless materials can collapse during either static or dynamic loading, resulting in a rapid buildup of pore pressure and associated reduction in shear resistance.
Abstract: Loose cohesionless materials can collapse during either static or dynamic loading, resulting in a rapid buildup of pore pressure and associated reduction in shear resistance. As the cohesionless ma...
TL;DR: In this article, the problem of varying species of heavy metals existing as individual species or in combination with each other in simulated contaminant leachates (solutions) was studied in relation to selectivity.
Abstract: The problem of varying species of heavy metals existing as individual species or in combination with each other in simulated contaminant leachates (solutions) is studied in relation to selectivity ...
TL;DR: In this paper, the selective sequential extraction method of analysis was used to determine the distribution of heavy metals in some clay soils, to assist in evaluation of the role of the various cla...
Abstract: The selective sequential extraction method of analysis is used in this study to determine the distribution of heavy metals in some clay soils, to assist in evaluation of the role of the various cla...
TL;DR: In this paper, the influence of the intermediate principal stress on the stress-strain, pore-pressure, and strength characteristics of a normally consolidated, natural anisotope was investigated.
Abstract: An experimental study is presented of the influence of the intermediate principal stress on the stress–strain, pore-pressure, and strength characteristics of a normally consolidated, natural anisot...
TL;DR: In this paper, field observations on 449 debris flows in the Queen Charlotte Islands, British Columbia, were summarized using both mechanistic and morphological criteria, and five classes of depositional area were proposed.
Abstract: Field observations on 449 debris flows in the Queen Charlotte Islands, British Columbia, are summarized. Movement of debris is classified according to seven characteristic types designated for the purposes of the study. Data on the physical characteristics of the events are presented. An analysis of the data is made with reference to event initiation, yield, and deposition using both mechanistic and morphological criteria. For those events which initiate on an open slope, the infinite slope model is used to establish a relationship between field drainage class and slope angle, for assumed frictional and cohesive soil strength parameters. The field drainage classes are directly related to the postulated location of the groundwater surface within the depth of the rupture plane. Deposition of channelized events is found to be influenced by the ratio of channel width to channel gradient, with the onset of deposition expected when the ratio exceeds unity. Five classes of depositional area are proposed. The mag...
TL;DR: In this article, natural Ca-montmorillonite clay soils or engineered clay barriers in western Canada are often used to contain brine generated from the surface disposal of potash tailings or from drilling activitie...
Abstract: Natural Ca-montmorillonite clay soils or engineered clay barriers in western Canada are often used to contain brine generated from the surface disposal of potash tailings or from drilling activitie...
TL;DR: In this article, the results of short-term pullout tests and long-term full-scale measurements of negative skin friction on driven piles in Bangkok subsoils were described, and two instrumented cylindrical (hollo...
Abstract: This paper describes the results of short-term pullout tests and long-term full-scale measurements of negative skin friction on driven piles in Bangkok subsoils. Two instrumented cylindrical (hollo...
TL;DR: The 99-ha Keele Valley Landfill is located in a former sand and gravel pit at Maple, Ontario as mentioned in this paper, and the base and sides of the pit are lined with a minimum of 1.2'm of excavated clayey silt till recompact...
Abstract: The 99-ha Keele Valley Landfill is located in a former sand and gravel pit at Maple, Ontario. The base and sides of the pit are lined with a minimum of 1.2 m of excavated clayey silt till recompact...
TL;DR: In this article, alternative approaches have been suggested for evaluation and correction of the testing errors caused by membrane compliance and the degree to which membrane compliance may affect the results of the test.
Abstract: Several alternative approaches have been suggested for evaluation and correction of the testing errors caused by membrane compliance. The degree to which membrane compliance may affect the results ...
TL;DR: In this paper, pullout tests are reported on geosynthetic test specimens embedded in a relatively dense, coarse sand sample and displacement controlled and are performed at different vertical effective locations.
Abstract: Pullout tests are reported on geosynthetic test specimens embedded in a relatively dense, coarse sand sample. The tests are displacement controlled and are performed at different vertical effective...
TL;DR: In this article, cyclic torsional simple shear (CTSS) and cyclic triaxial (CTX) tests were carried out to investigate the dynamic deformation characteristics of sands and rockfill materials.
Abstract: Cyclic torsional simple shear (CTSS) tests and cyclic triaxial (CTX) tests were carried out to investigate the dynamic deformation characteristics of sands and rockfill materials. It was found that...
TL;DR: The present method of oil sands tailings disposal results in a tailings pond with a fine tailings zone that will take many decades to consolidate fully as mentioned in this paper, which is the case in many coal-mining sites.
Abstract: The present method of oil sands tailings disposal results in a tailings pond with a fine tailings zone that will take many decades to consolidate fully. The fine tailings accumulate as a result of ...
TL;DR: In this paper, stress-strain parameters for modeling the response of rockfill dams to construction and reservoir filling are examined. But the authors focus on a single dam and do not consider other dams.
Abstract: Stress–strain parameters for modelling the response of rockfill dams to construction and reservoir filling are examined. Parameters from both laboratory tests and back analysis of existing dams are...
TL;DR: The Heath Steele Waste Rock Project was initiated in 1989 under Canada's Mine Environment Neutral Drainage (MEND) Program to develop and test strategies for managing acid-generating waste rock as mentioned in this paper.
Abstract: The Heath Steele Waste Rock Project was initiated in 1989 under Canada's Mine Environment Neutral Drainage (MEND) Program to develop and test strategies for managing acid-generating waste rock. The...
TL;DR: In this paper, the behavior of single free-head model flexible vertical and batter piles under central inclined loads in two-layered soil is investigated, and the bearing capacity of the piles is found to depend on bearing capacity.
Abstract: The behaviour of single free-head model flexible vertical and batter piles under central inclined loads in two-layered soil is investigated. The bearing capacity of the piles is found to depend on ...
TL;DR: In this article, the authors studied the stress-strain response of Cold Lake oil sands at confining stresses and temperatures up to 18'MPa and 200'C, respectively, using 89mm full diameter cores.
Abstract: The stress–strain response of Cold Lake oil sands at confining stresses and temperatures up to 18 MPa and 200 °C, respectively, was studied in a triaxial apparatus using 89-mm full diameter cores. ...
TL;DR: In this article, a data base of the distribution of saline permafrost in the Northwest Territories shows high pore-water salinities beneath coastal communities and at locations along the upper Mackenzie Valley and within the Mackenzie Delta.
Abstract: Saline permafrost has a detrimental impact on the performance of foundations. Increased pore-water salinity decreases the strength and increases the deformation susceptibility of permafrost and foundations installed in permafrost. A data base of the distribution of saline permafrost in the Northwest Territories shows high pore-water salinities beneath coastal communities and at locations along the upper Mackenzie Valley and within the Mackenzie Delta. Salinity of inland sites is usually low. High salinities are usually associated with ice-poor materials and are linked with previous marine submergence associated with glacial events. Key words : permafrost, saline distribution, measurements, Quaternary geology.
TL;DR: In this paper, the observed pore pressures and deformations induced by an earth balance shield used to construct the Furongjiang sewer tunnel in soft saturated ground in Shanghai, China are briefly described.
Abstract: The observed pore pressures and deformations induced by an earth balance shield used to construct the Furongjiang sewer tunnel in soft saturated ground in Shanghai, China, are briefly described. A ...
TL;DR: Alberta's largest historic landslide dammed the Saddle River near Rycroft, Alberta, and thrust the bed of the river upward against the opposite valley wall forming a type 6 landslide dam as discussed by the authors.
Abstract: Alberta's largest historic landslide dammed the Saddle River near Rycroft, Alberta, and thrust the bed of the river upward against the opposite valley wall forming a type 6 landslide dam. The Rycro...
TL;DR: A 130 cm thick composite soil cover was constructed on an experimental waste-rock pile at the Heath Steele mine site near Newcastle, New Brunswick as discussed by the authors, which consisted of a 30 cm thick sand base, a...
Abstract: A 130 cm thick composite soil cover was constructed on an experimental waste-rock pile at the Heath Steele mine site near Newcastle, New Brunswick. The cover consisted of a 30 cm thick sand base, a...